President Barack Obama, third from left, with his daughters Malia Obama, from left, and Sasha Obama, join host, from third right to right, Conan O'Brien, singer Megan Hilty, South Korean rapper PSY and other performers, during the Annual Christmas in Washington presentation at the National Building Museum in Washington, Sunday, Dec. 9, 2012. (AP Photo/Manuel Balce Ceneta)
Obamas celebrate 'Christmas in Washington'
President Barack Obama took part in the 'Christmas in
Washington' concert with first lady Michelle Obama and daughters
Malia and Sasha Obama at the National Building Museum on Dec. 9,